Belvidere, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Belvidere, IL in one place.
Showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 4pm, then showers and thunderstorms. Mostly cloudy. High near 81, with temperatures falling to around 77 in the afternoon. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Belvidere, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jun 8, 2026 8:23 AM CDT.
The active forecast window currently covers Jun 8 to Jun 14, 2026 for Belvidere, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 8:23 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Belvidere
Wednesday looks like the warmest upcoming period in Belvidere at 89 degrees F.
Sunday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 20 mph SSW.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 8:23 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Mostly cloudy, with a low around 69. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 7am. Partly sunny, with a high near 86. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 72. South southwest wind 0 to 5 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.
Showers and thunderstorms likely. Partly sunny, with a high near 85.
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 61.
A slight chance of rain showers after 1pm. Sunny, with a high near 85.
A chance of rain showers. Mostly clear, with a low around 61.
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
A chance of showers and thunderstorms. Partly cloudy, with a low around 60.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 80.
A chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jun 8
|
Showers And Thunderstorms then Showers And Thunderstorms Likely
|
81°F |
10 to 15 mph
SE
|
|
Tonight
Jun 8
|
Showers And Thunderstorms
|
69°F |
5 to 10 mph
S
|
|
Tuesday
Jun 9
|
Chance Rain Showers then Partly Sunny
|
86°F |
5 to 10 mph
W
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
72°F |
0 to 5 mph
SSW
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms
|
89°F |
10 to 20 mph
SSW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
71°F |
10 to 20 mph
SW
|
|
Thursday
Jun 11
|
Showers And Thunderstorms Likely
|
85°F |
10 to 15 mph
SW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms Likely
|
61°F |
5 to 15 mph
WSW
|
|
Friday
Jun 12
|
Sunny then Slight Chance Rain Showers
|
85°F |
5 to 15 mph
W
|
|
Friday Night
Jun 12
|
Chance Rain Showers
|
61°F |
5 to 10 mph
SW
|
|
Saturday
Jun 13
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
84°F |
5 to 10 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
60°F |
5 to 10 mph
WNW
|
|
Sunday
Jun 14
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
80°F |
5 to 10 mph
NNW
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
55°F |
0 to 10 mph
NNE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Belvidere.
